On testing separability restrictions with flexible functional forms

In this paper, we examine the implications of imposing separability on the translog and three other flexible forms. Our results imply that the Berndt-Christensen ‘nonlinear’ test for weak separability tests not only for weak separability, but also imposes a restrictive structure on the macro and micro functions for all currently known ‘flexible’ functional forms. For example, testing for weak separability using the translog as an exact form is in fact equivalent to testing for a hybrid of strong (additive) separability and homothetic weak separability with Cobb-Douglas aggregator functions. Our results show that these ‘flexible’ functional forms are ‘separability-inflexible’. That is, they are not capable of providing a second-order approximation to an arbitrary weakly separable function in any neighbourhood of a given point.     

An investigation of certain interactions between large CPA firms and accounting educators

Some accounting educators have questioned whether selected interactions between the “Big Eight” accounting firms (Firms) and accounting educators might affect the academic freedom and independence of accounting educators. This study compares the current and normative attitudes of accounting professors about certain areas of these interactions and concludes that a significant difference exists between the attitudes of the current and the normative groups. The implications of this finding are discussed.     

competitive markets from Satisfied producers

What is the future of Competition Policy? Russell Lewis discusses this and other issues with the Secretary of State for Trade and Industry, the Rt Hon, Peter Lilley MP.     

The Tomteboda Mail Centre Revisited

The first issue of NTWE featured a piece on work organisation at the Swedish Mail Centre at Tomteboda. In the light of a recent visit there, the author responds to that original account.     

discovering the truth about aid

Economists in the House of Lords are rare; Russell Lewis interviews the celebrated sceptic of foreign aid - Lord Bauer, better known perhaps as Professor P. T. Bauer, and explores his still controversial views about inter-government aid and aspects of his eventful life.     

THE POTENTIAL IMPACT OF ENVIRONMENTAL CROSS-COMPLIANCE ON ARABLE FARMING

It is argued that the ongoing CAP/GATT reforms provide a basis for the introduction of environmental cross-compliance (ECC). ECC enables policymakers to restrict output-related direct support payments to those farmers who comply with specified environmental guidelines aimed at reducing the external damage effects of agricultural production. This paper is an exploratory investigation of ECC and presents the results of a farm-level linear programming analysis of 15 North-West England arable farms. The environmental guidelines, which relate to permanent as opposed to rotational set-aside and to levels of fertiliser use, are widely applicable to the extent that ECC can be implemented as a voluntary policy system. They are clearly effective in achieving policy goals since all but one of the farmers investigated would comply with the full range of restrictions considered. Within this range, gross margins are reduced by up to 10 per cent while area and output of seed crops are reduced by around 22 per cent and 12 per cent respectively. Row crops area and output are more robust, each falling by just under 4 per cent.